Date: Sun, 25 Oct 1998 19:41:04 -0500 From: Dan Swartzendruber <dswartz@druber.com> To: Greg Lehey <grog@lemis.com> Cc: Steve Friedrich <SteveFriedrich@Hot-Shot.com>, Geoffrey Robinson <geoffr@globalserve.net>, FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: Installing on a System with Too Much RAM Message-ID: <3.0.5.32.19981025194104.009719b0@mail.kersur.net> In-Reply-To: <19981026110537.Z16609@freebie.lemis.com> References: <199810251512.KAA09650@laker.net> <199810251512.KAA09650@laker.net>
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At 11:05 AM 10/26/98 +1030, Greg Lehey wrote: >On Sunday, 25 October 1998 at 10:11:21 -0500, Steve Friedrich wrote: >> On Sat, 24 Oct 1998 14:45:16 -0400, Geoffrey Robinson wrote: >> >>> Steve Friedrich wrote: >>>> >>>> On Fri, 23 Oct 1998 17:30:03 -0400, Geoffrey Robinson wrote: >>>> >>>>> No, the panic occurs immediately after the kernel configuration menu. >>>> >>>> What message does the panic spit out? If there are multiple messages, >>>> the first one is very important. >>> >>> >>> This is the exact error message >>> >>> panic: bounce memory out of range >>> Automatic reboot in 15 seconds - press a key on the console to abort >> >> The GENERIC kernel has: >> >> options BOUNCE_BUFFERS #include support for DMA bounce >> buffers >> >> and LINT says: >> >> # BOUNCE_BUFFERS provides support for ISA DMA on machines with more >> # than 16 megabytes of memory. It doesn't hurt on other machines. >> # Some broken EISA and VLB hardware may need this, too. >> >> The way I read this, is that it should work by default. >> >> Anyone know about this buffer option?? > >Yes. I thought that the comment in LINT was pretty obvious, though. >If you have an ISA DMA board and more than 16 MB of memory, you need >bounce buffers. Some obscure drivers don't handle bounce buffers >correctly. > >This isn't the problem that Geoffrey has, however: he doesn't have any >ISA boards, so this should never happen. I'm still trying to think >what to do about this: he has a rather interesting configuration (Dell >PowerEdge 6300 with an unsupported RAID controller). I've seen the same exact behavior. A Dell poweredge 4200 (?). No ISA cards, best as I know. I had 512MB RAM. When I pulled out 2 DIMM's the panic went away. However, I only see this with the GENERIC kernel right off the CDROM. With my customized PCI-only kernel, no panic. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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